Fishing tool



Nov. 25, 1930. 7E. A. HAZEN 3 FISHING TOOL Filed May a, 1925 2 Sheets-Sheet 1 ATTORNEY I Nov. 25,1930.

E. A. HAZEN FISHING TOOL Filed May 8 1925 Earl H 2 Sheets-Sheet 2 INVENTQR azefl AT onmvs Patented Nov. 25, 1930 i "mm STATES EARL A. HAZEN, or JOPL'IN, iviissenni, Assrerron roirnysronn mama contra-NY,

or BEAVER FALLS, PENNSYLVANIA, a oosroimrion on rnnusYLvANmrrsnine root Application filed May 8, 192a st al-m .it m yiq Y This invention relates to a fishing tool, es-

it pecia-lly adapted to be used in drilled wells for recovering drill bits and similartools which have been losttherein, It has been designed with particular reference to its use with churn drill outfits, but may also at tlmes i be used with those of therotary type.

The objectof the invention is to provide a fishing tool adapted to envelop or slide over and grip a bit or other tool which has broken off at the pin, or has become loose and lies over against the wall of the hole, and has po siblybecome sanded in. 1

A fishing tool Constructed according to my invention combines the advantages or" a horn socket and a wall hook, and comprises 1mprovements on both of these-tools as they are commonly constructed.

The essential characteristics of the invention and the advantages resulting therefrom will be more specifically explained in the fol lowing detailed description, which is to be taken in connection wlth the accompanylng tap. I

the left of Figure 1.

drawing illustrating the same in its preferred form.

In the drawlngz Figure 1 is a side elevation of the complete fishing tool. 7 i V Figure 2 is an enlarged slde elevation of the lower portion of the tool, as viewed trom Figure 3 is an enlarged viewof the lower portion of Figure 1.

Figurel is a view takenfrom the opposite side to that shown in Figure 2.

a Figure 5 is a View ot'the portlon of the tool shown in Fig. 4 about :to engage a broken drill bit to be recovered.

Figure 6 is a View of the tool shown in Fig.

" 1 with a portion cutaway to show the tapered construction of the interior of the tool.

A tool, which embodies my invention, is-

shown in the drawings, and has atubular portion 5 extending for the greater portion of its length, and of substantially the same diameter as the hole in which itis to be used. Connected to the, upper end of the tubular portion is a head 6, formed with a tapered threaded pin adapted to be secured to a swivel socket, or to the lower end of a rotary drill its lower-end in an inclined edge 7, having'a slot '8 at ornear itsuppermost portion? This slotextends directlyupwardly fora short dis 'l tame; and then helically. One side of theslot tudinally of thetool and almost parallel to its ax s to the point 10, 'where it merges into the helical edge portionll. The other edge 7 i 181 of the slotprovides a nose 12, whioh is similar'in function to the so-called wall hook now in use, and said edge 13 extends thence helically upwardly. The helical edge portion 13*has a sharper pitch than the edge portion 11, so that the two "helical edges converge hook 122 on the opposite side of thetoolfrom The purpose of the describedshaping of the lower end jotthe tool is to cause the tool to turn onits axis, by: its own weightyasits lowerend" engages the bit until the latter enters the gap 8, and the wall hook 12 engagesl underneath the bit and draws it into the tube. That is, the wall hook 12 will drop.

past the'collarof the bit as the point engages the collar. Upon jarring from this position, the tool will be rotated by the helical edgelI riding on the s collar of the hit, eaus- Then, iby Lcontinued jarring," if necessary, the

edge 13 will. workbehind. the bit and gradu ally pull it away from the wall idf the hole.

until .itis drawn entirely within the tube 5. The; lower edge 7 is cut at an inclination for the, double purpose of; guiding the bit, or;

is termedby theedget), which extends longii i ing the. ihoolr 12 to slide :behind the collar,

without any material departure from the horn socket portion thereof having nonmovsalient features of the invention as claimed. able surfaces for gripping the tool.

What is claimed is:

In testimony that I claim the foregoing as 1. A fishing tool having a tubular horn my own, I have hereto afliXed my signature.

socket portion terminating in an inclined edge, and formed with a slot in its wall eX- tending upwardly from the region of the highest part of said edge, and having opposed helical sides; the slot having smooth and unbroken walls to serve as a guide.

2. A fishing tool having a tubular horn socket portion terminating in an inclined edge, and formed with a slot in its wall extending upwardly from the region of the highest part of said edge, and having opposed helical sides which gradually converge upwardly until they meet; the slot having smooth and unbroken walls to serve as a guide.

3. A fishing tool having a tubular lower portion terminating in an inclined edge, and formed with a slot in its wall extending from the region of the highest part of said edge, first directly upwardly and then helically, thus forming a wall hook below the base of the helical portion; said tool also having an interior surface formed to provide a horn socket.

4. A fishing tool having a tubular lower portion terminating in an inclined edge, and formed with a slot in its wall extending from the region of the highest part of said edge, first directly upwardly and then helically, thus forming a wall hook below the base of the helical portion, the flanking edges of the helical portion of the slot gradually converging upwardly until they meet; said tool also having an interior surface formed to provide a horn socket.

5. A fishing tool having a tubular lower portion, terminating in an inclined edge and formed with a slot in its wall extending upwardly from the region of the highest part of said edge, said slot having opposed helical edges which meet at a point considerably above, and on the opposite side of the tube from their starting points; said tool also having an interior surface formed to-provide a horn socket.

6 A fishing tool having a tubular lower portion, terminating in an inclined edge and formed with a slot in its wall extending from the region of the highest part of said edge, first directly upwardly and then helically, thus forming a wall hook below the base of the helical portion, said helical portion of the slot having opposed edges which meet at a point considerably above and on the opposite side of the tube from the base of the helical portion; said tool also having an interior surface formed to provide a horn socket.

7. A fishing tool combining in asingle implement a wall hook and a horn socket; the

EARL A. HAZEN. 

